title: Formation of N-heterocyclic carbene-boryl radicals through electrochemical and photochemical cleavage of the B-S bond in N-heterocyclic carbene-boryl sulfides.
abstract: The B-S bond in N-heterocyclic carbene (NHC)-boryl sulfides can be cleaved homolytically to NHC-boryl or NHC-thioboryl and thiyl radicals using light, either directly around 300 nm or with a sensitizer at a longer wavelength (>340 nm). In contrast, the electrochemical reductive cleavage of the B-S bond is difficult. This easy photolytic cleavage makes the NHC-boryl sulfides good type I photopolymerization initiators for the polymerization of acrylates under air.
authors.affiliation: Institut de Science des Matériaux de Mulhouse IS2M (UMR CNRS 7361), Université de Haute Alsace , 15 rue Jean Starcky, 68057 Mulhouse Cedex, France.
authors.forename: Sofia
authors.initials: S
authors.lastname: Telitel
authors.forename: Anne-Laure
authors.initials: AL
authors.lastname: Vallet
authors.forename: Stéphane
authors.initials: S
authors.lastname: Schweizer
authors.forename: Bernard
authors.initials: B
authors.lastname: Delpech
authors.forename: Nicolas
authors.initials: N
authors.lastname: Blanchard
authors.forename: Fabrice
authors.initials: F
authors.lastname: Morlet-Savary
authors.forename: Bernadette
authors.initials: B
authors.lastname: Graff
authors.forename: Dennis P
authors.initials: DP
authors.lastname: Curran
authors.forename: Marc
authors.initials: M
authors.lastname: Robert
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Lacôte
authors.forename: Jacques
authors.initials: J
authors.lastname: Lalevée